Home / 4,747.52-7,121.28-1,668.80

Finding the Fourth Proportional to 4,747.52, 7,121.28 and 1,668.80

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Solution

The fourth proportional to 4,747.52, 7,121.28 and 1,668.80 is: 2,503.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,747.52 : 7,121.28 = 1,668.80 : x
  2. Step 2: Convert to fraction form
    4,747.52/7,121.28 = 1,668.80/x
  3. Step 3: Cross multiply
    4,747.52x = 7,121.28 × 1,668.80
  4. Step 4: Simplify right side
    4,747.52x = 11,883,992.06
  5. Step 5: Solve for x
    x = 11,883,992.06/4,747.52
  6. Step 6: Final answer
    x = 2,503.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.